Synthesis of Activated Carbon from Waste Tea by KOH Activation as High Performance Supercapacitors Electrodes

Husnul Hasanah, Syukri and Her

Abstract

Activated carbon from waste tea (ACt) is prepared via KOH activation under N2 atmosphere at 800°C. The results of the ACt shows homogeneous and evenly distributed pores so high specific surface area for achieving high-performance supercapacitor electrodes. The maximum specific surface area of 1451.07 m2/g is observed at the mass ratio ACt and KOH 1:3. As the electrode materials, the ACt exhibit ideal capacitive behaviors in H2SO4 electrolyte and the maximum specific capacitance is 162.613 F/g. So the utilization of waste tea for the scalable production of activated carbon for high-performance supercapacitors as low-cost storage devices.